xplico - Internet traffic decoder and network forensic analysis tool

The goal of Xplico is extract from an internet traffic capture the
applications data contained. For example, from a pcap file Xplico
extracts each email (POP, IMAP, and SMTP protocols), all HTTP contents,
each VoIP call (SIP), FTP, TFTP, and so on. Xplico isn’t a network
protocol analyzer. Xplico is an open source Network Forensic Analysis Tool
(NFAT).